World Register of Marine Species (WoRMS)
MolluscaBase eds. (2026). MolluscaBase. Lyonsiella formosa (Jeffreys, 1882). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=849789 on 2026-08-30
Jeffreys, J. G. (1882). On the Mollusca procured during the 'Lightning' and 'Porcupine' expeditions 1868-70. (Part IV). Proceedings of the Zoological Society of London. 1881 : 922-952, pl. 70-71.